C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

valve cover script height

Thread Tools
 
Search this Thread
 
Old Dec 15, 2006 | 11:41 AM
  #1  
builder's Avatar
builder
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Jun 2006
Posts: 1,148
Likes: 5
From: South Dakota
Default valve cover script height

Can somebody clear up (or complicate) the time frame (or why the change) in which the C1 seven fin valve cover script changed in height? Was it late '58 that the script was made higher? Someone was telling me that the higher script was used on the higher perfomance engines. Not so sure of the later.

Also the cut out on the side of the valve covers. Those were made for easier removal with the FI units weren't they?

Last edited by builder; Dec 15, 2006 at 12:03 PM.
Reply
Old Dec 15, 2006 | 11:58 AM
  #2  
wmf62's Avatar
wmf62
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jun 2006
Posts: 17,901
Likes: 751
From: Inverness FL
St. Jude Donor '07
Default

Originally Posted by builder
Can somebody clear up (or complicate) the time frame (or why the change) in which the C1 seven fin valve cover script changed in height? Was it late '58 that the script was made higher? Someone was telling me that the higher script was used on the higher perfomance engines. Not so sure of the later.

Also the cut out on the side of the valve covers. Those were made for removal with the FI units weren't they?

hmmm, i don't know of any way to take off the driver's side valve cover on an FI car without first taking off the air meter ring.
Bill
Reply
Old Dec 15, 2006 | 12:07 PM
  #3  
JohnZ's Avatar
JohnZ
Team Owner
Supporting Lifetime Gold
20 Year Member
Veteran: Army
 
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
Default

The low-script (.030") 7-fin cover changed to the high-script (.125") cover for appearance reasons during 1958 production, about S/N 3600; that cover continued into 1959 production until about S/N 6000, when the cylinder heads changed from the "staggered" cover holes to the "straight-across" cover holes, and all subsequent versions of the finned covers had the high script.

The cutouts in the inboard flange of the 9-fin covers (to clear the raised runners on the second-design 2x4 intake manifold) appeared at about S/N 1650 (650th car built) in 1956, and continued in all the subsequent versions of the 9-fin and 7-fin covers.

Reply
Old Dec 15, 2006 | 01:00 PM
  #4  
builder's Avatar
builder
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Jun 2006
Posts: 1,148
Likes: 5
From: South Dakota
Default Perfect

Thanks JohnZ,

That's exactly what I wanted to know.

I see them on ebay. They are bringing good money, but still seem to fetch a "somewhat reasonable" price. Is there a good supply of them out there yet, or are they getting more scarce?
Reply

Get notified of new replies

To valve cover script height





All times are GMT -4. The time now is 10:57 AM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-3
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-4
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-5
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-6
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-7
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-8
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-9
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE